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Dahasolnce [82]
3 years ago
13

12+x=-3(4-x) help please

Mathematics
2 answers:
frozen [14]3 years ago
7 0
12 + x = -12 + 3x
12 + x = 3x - 12
12 = 3x - 12 - x
12 = 2x - 12
12 + 12 = 2x
24 = 2x
x = 24/2
x = 12
zubka84 [21]3 years ago
5 0
<span>12+x=-3(4-x)
</span><span>12+x=-12 + 3x
3x - x = 12 + 12
2x = 24
 x = 12</span>
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there are 8 apples left I n the table. there are 1/4 as many apples as bananas left on the table. how many bananas are there
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3 0
3 years ago
Write the equation of the given line in slope-intercept form
Snowcat [4.5K]

Answer:

y = -3x -1

Step-by-step explanation:

Hi there!

We are given a line on a coordinate grid, with 2 marked points, (-1, 2) and (1, -4)

We can use these points to help find the equation of the line, which we can write in slope-intercept form

Slope-intercept form is given as y=mx+b, where m is the slope and b is the y intercept

First, we need to find the slope of the line
The formula for the slope calculated from 2 points is \frac{y_2-y_1}{x_2-x_1}, where (x_1, y_1) and (x_2, y_2) are points

We have everything we need to find the slope, but let's label the values of the points to help avoid confusion.

x_1=-1\\y_1=2\\x_2=1\\y_2=-4

Now substitute these values into the formula to find the slope

m=\frac{y_2-y_1}{x_2-x_1}

m=\frac{-4-2}{1--1}

Simplify

m=\frac{-4-2}{1+1}

m=\frac{-6}{2}

Divide

m= -3

The slope of the line is -3

We can substitute this into the formula.
Here's our line so far:

y = -3x + b

Now we need to find b

As the equation passes through the points (-1, 2) and (1, -4), we can use either one to find the value of b

Taking (-1, 2) for example:

Substitute -1 as x and 2 as y.

2 = -3(-1) + b

multiply

2 = 3 + b

Subtract 3 from both sides

-1 = b

Substitute -1 as b.

y = -3x - 1

Hope this helps!

See more on this topic here: brainly.com/question/27402935

8 0
2 years ago
Explain the steps when solving for the variable y<br> 12x+2y=18
makvit [3.9K]

Answer:

Simplifying

12x + 2y = 18

Solving

12x + 2y = 18

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-2y' to each side of the equation.

12x + 2y + -2y = 18 + -2y

Combine like terms: 2y + -2y = 0

12x + 0 = 18 + -2y

12x = 18 + -2y

Divide each side by '12'.

x = 1.5 + -0.1666666667y

Simplifying

x = 1.5 + -0.1666666667y

3 0
3 years ago
Read 2 more answers
7j+5-8k<br> when j=0.5 and k=0.25
Tomtit [17]

Answer:

<em>6.5</em>

Step-by-step explanation:

To perform this kind of exercise, it is necessary to replace the value indicated in each variable each time you find the variable in the equation.

7j+5-8k

If j=0.5 and k=0.25, replace the value of each variable.

7(0.5)+5-8(0.25)=

now perform the indicated operations

7(0.5)+5-8(0.25)=3.5+5-2=6.5

5 0
3 years ago
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